resolved rhbz#918168 ICU: CVE-2013-0900 race condition allows DoS

Upstream changes
https://ssl.icu-project.org/trac/changeset/32865
https://ssl.icu-project.org/trac/changeset/32908

See also
https://bugzilla.redhat.com/show_bug.cgi?id=918167

Plus changed UMutex to UMTX to make these compile in icu49.

Change-Id: Ida28f7c955959565a2133242b826bb5038758407
Reviewed-on: https://gerrit.libreoffice.org/2576Reviewed-by: Fridrich Strba <fridrich@documentfoundation.org>
Tested-by: Fridrich Strba <fridrich@documentfoundation.org>

icu/icu4c-CVE-2013-0900_umutex.patch

+diff -ruN icu.orig/source/common/locid.cpp icu/source/common/locid.cpp
+--- misc/build/icu.orig/source/common/locid.cpp	2013-03-06 21:27:35.170696967 +0100
++++ misc/build/icu/source/common/locid.cpp	2013-03-06 21:29:47.711378977 +0100
+@@ -53,7 +53,7 @@
+ static Locale *gLocaleCache = NULL;
+ 
+ // gDefaultLocaleMutex protects all access to gDefaultLocalesHashT and gDefaultLocale.
+-static UMutex gDefaultLocaleMutex = U_MUTEX_INITIALIZER;
++static UMTX gDefaultLocaleMutex = NULL;
+ static UHashtable *gDefaultLocalesHashT = NULL;
+ static Locale *gDefaultLocale = NULL;
+ 

icu/makefile.mk

@@ -59,6 +59,8 @@ PATCH_FILES=\
     icu4c-solarisgcc.patch \
     icu4c-mkdir.patch \
     icu4c-buffer-overflow.patch \
+	icu4c.9737.CVE-2013-0900_changesets_32865_32908.patch \
+	icu4c-CVE-2013-0900_umutex.patch \
 
 .IF "$(OS)"=="ANDROID"
 PATCH_FILES+=\